Linda Holliday started yesterday in a doing-good mood. The executive director of the Bill Belichick Foundation (and longtime girlfriend of the Patriots head coach) visited Good Sports, a nonprofit that provides athletic equipment to underprivileged programs — to get new football gear for BBF and Good Sports grant recipients ready for shipping. Holliday spent nearly two hours at the Good Sports warehouse in Norwood boxing up everything from mouth guards, football pants and pads to receiver gloves for six football programs around the country. The Bill Belichick Foundation Football Equipment Grant accompanies the BBF’s partnership with STX to provide lacrosse equipment to teams in need during the spring and summer seasons.